Gateway Science Museum: Noon-5 p.m. “Backyard Monsters: the World of Insects”; demonstration lab and Discovery Room with hands-on activities for chlidren; “Witness: Endangered Species of North America” photographs. Adults $5, children $3. College of Natural Sciences, Chico State. Next to Bidwell Mansion, 625 The Esplanade. 898-4121.

Spanish speaking support group for special needs families, Gridley: 9-10 a.m. support group time; 10-11 a.m. training, work with families. 1574 Highway 99. No child care. Rowell Family Empowerment of Northern California, 876-8321, ext. 22. First Thursday.

OPT for Fitness: 10-11 a.m. Recipes, cooking and shopping tips, exercise ideas and support for people who want to eat better and improve their fitness. $20 a month or sliding scale. 1311-B Mangrove Ave., Chico. 345-0678. Weekly.